US11338495B2 - Device and method for controlling the throughflow of blow-molding fluid during the blow molding of containers - Google Patents

Device and method for controlling the throughflow of blow-molding fluid during the blow molding of containers Download PDF

Info

Publication number
US11338495B2
US11338495B2 US16/461,674 US201716461674A US11338495B2 US 11338495 B2 US11338495 B2 US 11338495B2 US 201716461674 A US201716461674 A US 201716461674A US 11338495 B2 US11338495 B2 US 11338495B2
Authority
US
United States
Prior art keywords
control
attainment
blow
actuator
blow molding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US16/461,674
Other languages
English (en)
Other versions
US20190351603A1 (en
Inventor
Christian Busch
Heinz-Herrmann Meyer
Theo Paulus
Francis Petitjean
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aventics GmbH
Original Assignee
Aventics GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aventics GmbH filed Critical Aventics GmbH
Publication of US20190351603A1 publication Critical patent/US20190351603A1/en
Application granted granted Critical
Publication of US11338495B2 publication Critical patent/US11338495B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/783—Measuring, controlling or regulating blowing pressure
    • B29C2049/7832—Blowing with two or more pressure levels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C2049/788—Controller type or interface
    • B29C2049/78805—Computer or PLC control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B29C2949/78025—
    • B29C2949/78378—
    • B29C2949/78537—
    • B29C2949/7889—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/4289—Valve constructions or configurations, e.g. arranged to reduce blowing fluid consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C49/783—Measuring, controlling or regulating blowing pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/37—Measurements
    • G05B2219/37371—Flow

Definitions

  • the disclosure relates to a device and to a method for controlling the throughflow of blow-molding fluid during the blow molding of containers.
  • blow-molding fluid blow-molding air, a blow-molding gas or even a liquid
  • blow molding or plastic blow molding a thermally preconditioned (heated) preform (also designated in the prior art as a parison) is molded in the flowable state as a result of introducing the blow-molding medium (the blow-molding fluid) at a defined blow-molding pressure to the inside contours of a blow-molding tool (the blow-molding mold).
  • Packaging articles such as bottles, canisters or vessels can be produced in this way.
  • the hollow body is stretched simultaneously in the circumferential and longitudinal direction above its glass transition temperature or crystalline melting temperature.
  • improved mechanical characteristics greater strength with thinner wall thickness, permeation reduction, stronger surface sheen
  • the heated preform is stretched mechanically by means of a stamp or a horizontal bar simultaneously with the circumferential stretching by means of the blow-molding fluid.
  • the introduction of the blow-molding fluid into the heated preform is effected during the blow molding or stretch blow molding process as a rule in two phases, a pre-blow molding phase at a lower pressure level within the range of approximately between 5 and 10 bar and a final blow molding phase (main blow molding phase) at a higher pressure level within the range of approximately between 25 and 40 bar.
  • the pre-blow molding phase serves for expanding the preform in as uniform a manner as possible inside the blow molding mold and the molding thereof along the inside contours of the blow molding mold.
  • the definitive pressure shaping of the container (also designated as the “blowing out”) is effected in the final blow molding phase where the expanded preform is pressed against the walls of the blow molding mold and receives its definitive contours.
  • a defined growth in the container balloon and a material distribution which is as uniform or defined as possible in the expanded preform and can essentially no longer be corrected in the main or final blow molding phase are to be achieved during the pre-blow molding phase.
  • the expanding container balloon is either to maintain a distance from the inside contours of the blow molding tool (the blow molding mold) that is as constant and tight as possible without already touching the tool wall or else is to abut precisely against said tool wall only in defined regions at the end of the pre-blow molding phase.
  • DE 198 43 053 A1 discloses a parameter control from which at least one parameter that influences the shaping operation is predefined for at least two preforms that are processed consecutively in a manner deviating one from another, by, for example, the pressure course of the pre-blow molding and main blow molding phases for two containers being predefined differently relative to one another. This serves to compensate a temperature distribution in the material of the preforms that is unequal relative to one another.
  • DE 198 43 053 A1 does not disclose any means for controlling or regulating the throughflow of the pressure means during the pre-blow molding phase of a container that is adapted to the special shaping of a container.
  • DE 102 40 252 A1 discloses a method and a device for the stretch blow molding of containers with an optimized process sequence.
  • a proportional valve and a pressure sensor are arranged in a supply line between a compressed air source and the blow-molding mold, the proportional valve being regulated in a closed sphere of activity (control circuit) by a regulating device by way of a pressure course that is predefined in time and stored as a setpoint value profile in a course memory.
  • control circuit a regulating device by way of a pressure course that is predefined in time and stored as a setpoint value profile in a course memory.
  • Patent documents EP 2 101 984 B1, EP 2 097 242 B1 and EP 094 467 B1, which together go back to French priority application FR 0610618 A disclose various realizations of a method and a control unit for the stretch blow molding of containers from a preform produced from plastics material, where an electric valve is controlled during the pre-blow molding phase by way of a predefined course and the pressure course in the preform is continually detected. Characteristic points in the measured pressure course (for example the attainment of a pressure peak) are determined and the attained values (time point of the pressure peak, achieved pressure value) are compared with predefined theoretical values of a theoretical course curve.
  • a modification of predefined method parameters for example the pre-blow molding pressure, pre-blow molding throughput, the speed of the horizontal bar or pre-heat temperature of the preform
  • a time displacement of the predefined method sequence modification of the pre-blow molding synchronization point, of the pre-blow molding start or the pre-blow molding tripping time
  • DE 10 2006 061 301 A1 discloses a method for the blow molding of containers produced from plastics material, where pressurized blow-molding air is introduced into a preform via a proportional valve in dependence on a predetermined sequence of the blow molding operation, the proportional valve being actuated in an open chain of effects according to a predefined course of the mass flux and its throughflow cross section being modified.
  • the proportional valve can be regulated in a closed loop by the actual mass flux being determined, for example, by means of a flow meter.
  • DE 10 2008 013 419 A1 discloses a method and a device for the blow molding of containers from a preform produced from thermoplastic material, where during the shaping of the preform into the container at least one parameter characterizing the shaping is measured and evaluated by a control device and, in dependence on said evaluation of the development of the container balloon, at least one manipulatable variable influencing the shaping operation is modified inside a closed control loop for adapting the measured parameter to an associated setpoint value.
  • control or regulation of the throughflow of the blow-molding air is effected in an open chain of effects or a closed loop by way of a reference variable that is predefined as a course and is modifiable in time (setpoint value course over time).
  • a reference variable that is predefined as a course and is modifiable in time (setpoint value course over time).
  • setpoint value course over time This requires in each case the prior creation of a setpoint value profile or a setpoint value curve for the development of the predefined value beyond the chronological sequence of the blow molding operation or at least of the pre-blow molding phase.
  • Such a setpoint value profile or such a setpoint value curve must first of all be tested and defined separately for each material mixture and container shape and each machine type in time-consuming pre-trials.
  • the object underlying the disclosure is to create an improved control device and an improved control method for the blow molding of containers which avoid the disadvantages shown.
  • a control device and a control method for the blow molding of containers are to be created which enable a controlled or defined growth and a defined expansion of the container balloon formed by the expanded preform in the pre-blow molding phase of the blow molding process without predefining a specific setpoint value profile or a setpoint value curve.
  • the core of the disclosure is formed by a device for controlling the throughflow of blow-molding fluid during the blow molding of containers produced from preforms (also designated below in summary as a “control device”), which device includes a proportional valve having a modifiable throughflow cross section, an actuator for actuating the proportional valve, a means for detecting the position of the actuator, sensor means for detecting the valve inlet pressure and valve outlet pressure and a digital control device and where the digital control device is set up in a programming manner for the purpose of calculating cyclically, in a manner automated to the run-time, control values for actuating the actuator for the attainment of a predefined container volume within a predefined time period during the pre-blow molding phase from the attainment of a predefinable time point, which corresponds to the attainment of the yield point of the preform, wherein in each calculation cycle the calculation of the respectively next control value is effected with consideration to the container volume attained up to the respective calculation cycle and calculatable by way of the previous actuator positions
  • blow molding is used as a generic term for blow molding or stretch blow molding in the sense of the disclosure, the device according to the disclosure and the method according to the disclosure can be used to control both method forms.
  • the disclosure has recognized that a defined growth in the container is attained in the pre-mold blowing phase of a blow molding process simply b the required throughflow of the blow-molding fluid of a proportional valve being calculated cyclically in manner automated to the run-time by way of the predefinition of the desired container volume and of the time period to attain said volume as a sequence of control values for the actuating of the proportional valve, the container volume already attained up to the respective calculation cycle and calculatable by way of the detected previous actuator positions and the detected previous pressure course being taken into consideration in each case.
  • the control device starts at the time of the attainment of the yield point of the preform, from which the expansion of the preform and consequently the stretching of the container balloon inside the blow mold begins.
  • control behavior of the device begins by control values for the future actuation of the actuator for the attainment of the predefined container volume within a predefined time period being calculated cyclically in a manner automated to the run-time by means of the control device which is set up correspondingly in a programmed manner, wherein in each calculation cycle the calculation of the respectively next control value is effected with consideration to the container volume attained up to the respective calculation cycle (previous sequences of the valve inlet and valve outlet pressure).
  • the program-related setup of the control device includes instructions by way of which is imaged a corresponding suitable technical control model, which is formed according to the general laws of fluid mechanics with the known relationships between the variables volume flow and mass flow, according to which the calculation of the respectively next control value for the actuation of the actuator for the attainment of the predefined container volume within the time period predefined for this purpose is effected in an automated cyclical manner as a control value sequence with consideration to the container volume already attained up to now.
  • the device according to the disclosure has the advantage that a controlled growth and a defined expansion of the container balloon is attained in the pre-blow molding phase of the blow molding process without the specification of a setpoint value profile or a setpoint value curve being necessary for a regulating parameter, such as, for example, the blow molding pressure, the throughflow of the blow-molding fluid or the mass flux of the blow-molding fluid, over the time course of the pre-blow molding phase.
  • the growth in the container is defined solely by the predefined container volume which is to be attained inside a time period which is also predefined.
  • continuing self-correction is intrinsic to the device according to the disclosure by the calculatable container volume that has already been attained in each case being taken into consideration in each calculation cycle.
  • the influence of disturbance variables that are not directly detectable such as, for example, deviations in the material characteristics of the preform, changes caused by the effects of wear on the component parts involved, or external influences, such as, for instance, oscillating processing temperatures inside the container shape or the thermal pre-conditioning of the preform, are compensated obliquely or indirectly by the cyclical recalculation of the respectively next control value in each case with consideration to the container volume already attained up to the time of calculation.
  • the container volume calculatable in each case and already attained so far, includes, in this connection, a practical correction point by way of which relevant modifications in the system, brought about by disturbance variables, are indirectly detected and are taken into consideration successively during the calculation of the control values as a result of consideration of the actual previous pressure course detected by the sensor means (development of the difference between valve inlet and valve outlet pressure).
  • each proportional valve is realized with its own control device, individual blow molding stations inside the same blow molding installation are able to be operated independently of one another as each control device is parameterizable independently and differently to one another. This enables the simultaneous production of container forms which differ from one another and/or the processing of different material mixtures at the individual blow-molding stations of a blow molding installation.
  • the point in time which corresponds to the attainment of the yield point of the preform is predefinable in a simple manner as a specific pressure value.
  • a continuous increase in pressure is brought about in the preform as a result of the introduction of the blow-molding fluid.
  • the preform begins to expand, which is linked to an instant drop in pressure on the operating side of the proportional valve which communicates with the blow mold and the container balloon expanding therein.
  • a maximum pressure value is consequently attained which is detectable by way of the sensor means for detecting the valve outlet pressure.
  • the point in time which corresponds to the attainment of the yield point of the preform is predefinable in a self-optimizing realization as a target definition as a certain time or a certain time interval from the start of the pre-blow molding phase or of the introduction of the blow-molding fluid.
  • the control device is set up in a programming manner for the purpose of determining the attainment of the yield point as a result of the evaluation of the valve outlet pressure as acquiring a pressure peak and of calculating a control sequence for actuating the actuator for attaining the yield point up to the predefined time point or expiry of the predefined time interval.
  • control device already controls the introduction of the blow-molding fluid for said interval of the pre-blow molding phase prior to the attainment of the yield point by way of a corresponding control sequence (actuator position).
  • the calculation of said control sequence to be applied up to the attainment of the yield point requires at least one first device pass (a first pass of the blow molding process at a constant valve lift) in order to determine the specific yield point of the material to be processed in each case as a result of the evaluation of the valve outlet pressure at a selectable constant valve lift (position of the actuator) as acquiring a pressure peak.
  • control device in said realization has a further self-optimizing characteristic since deviations in the physical characteristics of the processed preforms—for example their pre-tempering or quality—which result in a time delay of the yield point, are recognized and corrected. Such deviations in quality frequently exist in practice for instance when using biodegradable plastics.
  • the control device For functional integration into fieldbus or industrial Ethernet systems, system devices and/or a programmable logic plant control system (PLC) existing at the site of the installation, the control device is realized with at least one data communications interface which is compatible with at least one industrial protocol standard.
  • the control device is, for example, parameterizable via the data communications interface (input or modification of the default parameters), in addition sensor data, calculation data or other process data, which is acquired and stored (as buffering) by the control device, can be called up via the data communications interface.
  • the control device can receive control signals from a programmable logic plant control system (PLC).
  • PLC programmable logic plant control system
  • the precise design of the data communications interface is chosen by way of the desired compatibility and the desired scope of performance.
  • this is a wired fieldbus interface that is compatible with the industry standards Profibus, DeviceNet/ControlNet or CANopen or a wired network interface (industrial Ethernet) that is compatible with the industry standards Profinet, EtherNet/IP, Ethernet Powerlink or EtherCat.
  • a data communications interface can be designed to be compatible with several protocol standards (data transmission protocols) at the same time (for example by using an anybus module).
  • the control device is also connectable via the same indirectly to an external access point for wireless data communication, for instance an industrial wireless access point.
  • the control device can also be realized directly with a corresponding wireless data communications interface, for instance an industrial WLAN interface (IWLAN).
  • IWLAN industrial WLAN interface
  • control device To integrate the control device into conventional network segments, it is realized preferably with at least one standard network interface—where applicable in addition to an existing industry compatible data communications interface.
  • Devices already connected (fieldbus) or networked (industrial Ethernet) on the industrial control or production level (also designated as “field level”) can certainly also be connected directly to standard network segments or can be integrated in the same either via special infrastructure components (e.g. gateways) or with adequate compatibility depending on the data transmission technology used.
  • technical solutions also exist in reverse for integrating standard Ethernet components, such as, for example, a conventional PC into fieldbus or industrial Ethernet environments.
  • control device being realized with at least one standard network interface, direct integration of the control device into conventional network segments is ensured at all times independently of the existing external network infrastructure and the available infrastructure components.
  • the control device is, for example, parametrizable via the standard network interface (input or modification in the default parameter), in addition sensor data, calculation data or other process data acquired and stored (by way of buffering) by the control device are able to be called up. If the control device is also realized simultaneously with an industry-compatible data communications interface, separation of standard Ethernet and field level is already effected at the level of the control device.
  • the standard network interface can be designed in a wired (Ethernet) or wireless (WLAN) manner. Where designed as a wired network interface, the control device is also connectable via the same indirectly to an external access point for wireless data communication, for instance a wireless access point.
  • Easier parameterization of the device or easier call-up of data acquired and stored in the device is achieved by the control device being set up in a programming manner with a server service and a user interface for the input of parameterization data and/or for the display of or for the output of sensor data and/or calculation data acquired via an existing data communications interface or a standard network interface.
  • This is, for example, a web server service to input parameterization data remotely and/or to display remotely or call up remotely data stored in the device.
  • the server service being realized with at least one evaluation and/or analysis unit for the generation of evaluation and/or analysis results and for the display or the output of the evaluation and/or analysis results via an existing data communications interface or a standard network interface.
  • measurement curves are generated by the server service, for example on the fly and are provided for display or for call up by the operator.
  • warning or alarm signals can be output, in this connection, by the control device to the operator or to a higher-level plant control system by threshold values for acquirable process parameters (attainment of a maximum or minimum pressure value at the valve inlet or valve outlet, failure of the calculation of a control value as a result of predefined values for pressure, container volume and time period) being predefined for the control device by way of the parameterization.
  • threshold values for acquirable process parameters achievement of a maximum or minimum pressure value at the valve inlet or valve outlet, failure of the calculation of a control value as a result of predefined values for pressure, container volume and time period
  • a particularly advantageous, compact design which enables particularly flexible integration into installations for blow molding, is achieved by all components of the device being realized as one common structural unit.
  • a further core of the disclosure is formed by a method for controlling the throughflow of the blow-molding fluid during the blow molding of containers produced from preforms, including a proportional valve having a modifiable throughflow cross section, an actuator for actuating the proportional valve, a means for detecting the position of the actuator and sensor means for detecting the valve inlet pressure and valve outlet pressure, where a time point for the attainment of the yield point for the preform, a container volume and a time period for the attainment of the container volume are predefinable and by means of a digital control, a calculation of control values for the actuation of the actuator for the attainment of the predefined container volume within the predefined time period is effected cyclically in a manner automated to the run-time during the pre-blow molding phase from the attainment of the yield point and the actuator is actuated corresponding to the calculated control values, wherein in each calculation cycle, the calculation of the respectively next control value is effected with consideration to the container volume attained up to the respective calculation cycle
  • the calculation of the control values is effected in each calculation cycle with the functional aim of growth in the container that is as uniform as possible up to the attainment of the predefined container volume within the predefined time period.
  • the technical control model of the digital control includes, to this end, a corresponding qualitative quality default, according to which the calculation of the respectively next control value is effected in each calculation cycle with the aim of growth in the container that is as uniform as possible up to the attainment of the predefined container volume within the predefined time period.
  • Greater manual freedom of design to influence the growth in the container is created by, in addition, at least one container interim volume and in each case one interim time period for the attainment of the container interim volume are predefinable, wherein the calculation of the control values in each calculation cycle is effected with consideration to all predefined container interim volumes and interim time periods.
  • the operator is thus able to influence the growth in the container which is controlled per real-time calculation during the duration of the control process and to model it as a result of predefining one or multiple interim volumes.
  • the point in time which corresponds to the attainment of the yield point of the preform is predefinable as a specific pressure value.
  • the time of the attainment of the yield point is acquirable in the process as a result of evaluating the valve outlet pressure and is evaluatable as a starting point for the calculation of the control values.
  • the time which corresponds to the attainment of the yield point of the preform is predefinable as target definition as a certain point in time or as a time interval from the start of the pre-blow molding phase or of the introduction of the blow-molding fluid.
  • the attaining of the yield point is determined by the digital control by means of the evaluation of the valve outlet pressure as acquiring a pressure peak and a control sequence for the actuation of the actuator is calculated for the attainment of the yield point up to the predefined point in time or expiry of the predefined time interval.
  • the method already includes the control of the throughflow of the blow-molding fluid prior to the attainment of the yield point by way of a corresponding control sequence (actuator position) for said interval of the pre-blow molding phase.
  • the calculation of the control sequence to be applied up to the attainment of the yield point requires at least one first device pass (a first pass of the blow-molding process at a constant valve lift) in order to determine the specific yield point of the material to be processed in each case as a result of the evaluation of the valve outlet pressure at a selectively constant valve lift (position of the actuator) as acquiring a pressure peak.
  • the control method in said realization includes a further self-optimizing characteristic in operation (after the initial setup), as deviations in the physical characteristics of the processed preforms—for example their pre-tempering or quality—which result in delaying the yield point in time, are recognized and corrected.
  • FIG. 1 shows a perspective representation of a device for controlling the throughflow of blow-molding air during the blow molding of containers produced from preforms
  • FIG. 2 shows a schematic representation of components of the control device according to FIG. 1 ,
  • FIG. 3 shows a diagram for illustrating the growth in volume brought about in the preform during the chronological sequence of a stretch blow molding process
  • FIG. 4 shows a schematic block diagram of a digital control with input and output variables.
  • FIG. 1 shows the control device 1 with the proportional valve 2 , which is a 2/2-way valve and comprises a compressed air inlet 3 and a compressed air outlet 4 .
  • the actuation of the proportional valve 2 is effected by means of the electrically actuatable proportional magnet 5 which serves as actuator for the actuation of the proportional valve 2 .
  • the proportional magnet 5 is controlled by means of the digital control device 6 which consists of a programmable single-board computer (SBC) which is mounted in a housing and where all the electronic components (CPU, memory, input and output interfaces, D/A converter, DMA controller, etc.) necessary for operation are combined on one single printed circuit board 7 .
  • SBC programmable single-board computer
  • the printed circuit board 7 with various electronic component parts and the CPU 7 a can be seen in part in FIG. 1 through the transparently shown front cover of the housing of the control device 6 .
  • the printed circuit board 7 is realized for connection to a fieldbus or industrial Ethernet system by way of a data communications interface 8 which extends out of the housing of the control device 6 as an M 12 plug-in connector socket.
  • the data communications interface 8 is designed, if necessary, for example, as a fieldbus interface (for example compatible with Profibus, DeviceNet/ControlNet or CANopen) or as an industrial Ethernet interface (for example compatible with Profinet, EtherNet/IP, Ethernet Powerlink or EtherCat). It can be designed to be compatible with several protocol standards at the same time.
  • the control device 6 is integratable into fieldbus or industrial Ethernet systems, installation devices and/or a programmable logic plant control system (PLC) which exist at the location.
  • the control device 6 is additionally also connectable via the data communications interface 8 to an external access point for wireless data communication, for instance an industrial wireless access point.
  • the printed circuit board 7 is realized with a network interface 9 which extends out of the housing of the control device 6 also as an M 12 plug-in connector socket and is a standard Ethernet interface.
  • the control device 6 is connectable, for example, to an office network or the Internet via the network interface 9 .
  • the control device 6 is additionally also connectable to an external access point for wireless data communication, for instance a wireless access point, via the network interface 9 .
  • the housing of the control device 6 is screw-connected to the housing of the proportional valve 2 with the screws 10 and 10 ′.
  • the printed circuit board 7 of the control device 6 is connected internally via signal lines 24 , 24 ′ (cannot be seen in FIG. 1 due to the perspective) to sensor means 23 , 23 ′ (cannot be seen in FIG. 1 either also due to the representation), which are integrated into the proportional valve 2 , for acquiring the valve inlet and valve outlet pressure and which extend out of the housing of the proportional valve 2 via the connection base 11 .
  • the control device 6 receives its power supply via the power connection 12 which extends out of the housing of the control device 6 also as an M 12 plug-in connector socket.
  • control device 6 is connected to the proportional magnet 5 and the Hall sensor 15 via the combined and correspondingly multicore control/signal line 13 and the control/signal connection 14 .
  • the proportional magnet 5 is controllable electrically per current via the control/signal connection 14 .
  • the control/signal connection 14 at the same time includes a signal connection, via which the control device 6 receives signals from the Hall sensor 15 which is fitted onto the proportional magnet 5 .
  • All components of the control device 1 are realized as a common structural unit which is compact in design. To increase the compactness further, the control device 6 can be integrated into the housing of the proportional valve 2 in a modified design or all components of the control device 1 shown in FIG. 1 can be realized in a common housing.
  • each blow molding station is equipped with its own control device according to the disclosure, individual blow molding stations inside the same blow molding installation can be equipped differently and container forms that differ from one another can be produced and/or different material mixtures can be processed in said blow molding stations.
  • valve inlet and valve outlet pressure in a modified design as a result of the connection to external sensors which are already present inside the further blow molding installation and are arranged, for instance, inside a compressed air supply line to the valve inlet 3 and a compressed air connection line to the blow mold after the valve outlet 4 .
  • FIG. 2 shows a simple schematic representation of components of the control device 1 .
  • a valve tappet 16 which ends in a cone-shaped manner, is arranged in the proportional valve 2 so as to be linearly movable.
  • the valve tappet 16 is movable downward in opposition to the force of the spring 18 by the pin-shaped armature 17 which serves as actuator, the pressure medium inlet 3 being connected to the pressure medium outlet 4 .
  • the throughflow cross section which is produced in relation to the boundary surface 2 a of the valve body of the proportional valve 2 at the cone-shaped end of the valve tappet 16 in the open position, is continually modifiable and dependent on the linear position of the armature 17 .
  • Said armature is also mounted so as to be linearly movable inside a coil winding 19 , which surrounds it, in the housing of the proportional magnet 5 .
  • the linear position (status) of the armature 17 inside the coil winding 19 is dependent on the current, which is controlled by the control device 6 via the combined control/signal line 13 and is applied in each case to the coil winding 19 .
  • the armature 17 is continually movable downward as a result of increasing the current, pressing the valve tappet 16 downward in opposition to the force of the spring 18 . In the open position, the pressure in the valve tappet 16 is equalized as a result of the central compensation channel 20 .
  • the Hall sensor 15 by means of which the respective position of the armature 17 is acquirable, is fitted onto the proportional magnet 5 .
  • the armature 17 is realized at its upper end with the permanent magnet means 21 and the Hall sensor 15 with the sensor means 22 which detects the relative distance between the permanent magnet means 21 and itself in a contactless manner.
  • a signal representing the respective position of the armature 17 is transmitted by the Hall sensor 15 via the combined control/signal line 13 to the control device 6 .
  • Pressure sensors 23 and 23 ′ are additionally arranged in the proportional valve 2 as sensor means for acquiring the valve inlet pressure (by the pressure sensor 23 ) and the valve outlet pressure (pressure sensor 23 ′) and are connected to the control device 6 via the signal lines 24 and 24 ′.
  • FIG. 3 shows the container expansion of a preform during an exemplary chronological sequence of a stretch blow molding process (production of a container) as a volume/time diagram, the abscissa axis representing the course of time and the ordinate axis representing the growth in volume.
  • the stretching operation with the horizontal bar extended linearly in the blow molding mold, starts initially at time t 1 (at which the preform has the initial volume Vol. The preform is stretched in the longitudinal direction.
  • time t 2 at which the preform simply has a small growth in volume compared to the initial volume V 0 , brought about solely by longitudinal stretching
  • the introduction of the blow-molding air begins via the proportional valve 2 .
  • the end of the stretching operation is attained and the horizontal bar is fully extended.
  • the container has the already strongly increased volume ⁇ V 1 as a result of the expansion of the container once the yield point has been exceeded as a result of further introducing the blow-molding air.
  • the growth in the container brought about up to now as a result of the introduction of the blow-molding air is calculatable by way of the previous data acquired by the sensors.
  • the end of the pre-blow molding phase of the stretch blow molding process is attained, at which the expansion of the container balloon has attained the final volume ⁇ V 2 which is defined for the pre-blow molding phase.
  • the pre-blow molding phase ends and the final blow molding phase begins (also designated as the main blow molding phase), in which the container, under a sharply increased pressure level, is brought into its desired final form and the definitive final volume V max is brought about.
  • the time period A consequently characterizes the extent of the pre-blow molding phase during the stretch blow molding process which, in practice, is approximately 200 ms.
  • the graph B symbolizes the change in the volume of the preform and consequently at the same time the growth of the container balloon up to the time t 5 .
  • the curve C symbolizes the growth in the volume brought about purely by the longitudinal stretching of the preform with the extending of the horizontal bar.
  • FIG. 4 shows a simplified schematic block diagram of embodiments of the digital control 25 according to the disclosure with input and output variables.
  • the specification of the desired container final volume V max at time t max which corresponds to the end of the control operation, serves as a global default variable 26 for the control 25 .
  • this corresponds to the default of the volume V max for the time t 5 (the end of the control time period for the pre-blow molding phase) corresponding to the representation according to FIG. 3 .
  • volume ⁇ V 2 where applicable additionally minus the change in volume brought about only by the extending of the horizontal bar—can also be predefined directly as default variable 26 at time t 5 corresponding to the representation according to FIG. 3 .
  • the change in volume from ⁇ V 2 to V max brought about in the final blow molding phase can additionally be determined in a device pass by way of the sensor values and, automated in the control model, can be taken into consideration for the volume ⁇ V 2 to be attained up to the defined time t 5 .
  • the control 25 calculates the manipulated variable 27 as control value x CMD k which is, as the result of each individual calculation cycle, in each case a discrete control value (i.e.
  • the values acquired by the Hall sensor 15 and the pressure sensors 23 and 23 ′ are written, for this purpose, for example, continuously in DMA registers inside the memory of the control device 6 and are buffered continuously by the control device 6 at least during the run-time during the time period A.
  • the digital control 25 is set up in a programming manner with instructions with which is imaged a correspondingly suitable, technical control model, which is derived from the general laws of fluid mechanics with the known relationships between the variables volume flow and mass flow ⁇ dot over (m) ⁇ .
  • V . m . ⁇ R ⁇ ⁇ p 2 A - V ⁇ p . 2 p 2 A
  • R is the general gas constant
  • ⁇ is the gas temperature deemed to be constant in time.
  • the respectively next control value x CMD k is recalculated to the next control time point t k in each calculation cycle proceeding from the predefined container final volume V max at time t max , the container volume V k-1 already attained up to the respective calculation cycle and calculated by way of the acquired sensor data being taken into consideration.
  • the control value x CMD k calculated for the respective control time point t k consequently corresponds to the throughflow cross section of the proportional valve 2 necessary in each case to attain the residual volume V max -V k-1 remaining at said time in the remaining time period t max ⁇ t k under the given pressure conditions.
  • variables and parameters which are only modifiable in practice to a small extent such as, for example, the temperature of the blow-molding fluid, can be taken into consideration simplified as constants, since possible considerable qualitative changes in such boundary parameters are taken into consideration indirectly as a result of the self-correction which is continuous and inherent to the method according to the disclosure (as a result of the consideration of the container volume attained in each calculation cycle).
  • control 25 In a simple realization of the control 25 , only the default variable 26 , corresponding to the desired container final volume V max at time t max is predefined. Recalculation of the manipulated variable 27 as control value x CMD k at control time t k is effected, in this connection, in each case, by way of a corresponding qualitative quality default in the technical model, with which the calculation of the control value x CMD k in each calculation cycle is calculated with the aim of a growth in the container that is as uniform as possible overall up to the attainment of the predefined container final volume V max at time t max .
  • the default variables 28 and 28 ′ which correspond to the attainment of the container interim volume ⁇ V 0 at time t 3 (default variable 28 ) and the attainment of the container interim volume ⁇ V 1 at time t 4 (default variable 28 ′) according to the diagram in FIG. 3 , are additionally predefined in an alternative realization of the control 25 .
  • the recalculation of the manipulated variable 27 as control value x CDM k at time t k is effected, in this connection, in each case, by an interpolation where the interim volumes 28 and 28 ′, predefined in time, as support points form the basis for the calculation of the container final volume V max at time t max .

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
US16/461,674 2016-11-16 2017-11-06 Device and method for controlling the throughflow of blow-molding fluid during the blow molding of containers Active 2037-12-23 US11338495B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016013635.9 2016-11-16
DE102016013635.9A DE102016013635B4 (de) 2016-11-16 2016-11-16 Vorrichtung und Verfahren zur Steuerung des Blasfluiddurchflusses beim Blasformen von Behältern
PCT/DE2017/000366 WO2018091006A1 (de) 2016-11-16 2017-11-06 Vorrichtung und verfahren zur steuerung des blasfluiddurchflusses beim blasformen von behältern

Publications (2)

Publication Number Publication Date
US20190351603A1 US20190351603A1 (en) 2019-11-21
US11338495B2 true US11338495B2 (en) 2022-05-24

Family

ID=60569530

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/461,674 Active 2037-12-23 US11338495B2 (en) 2016-11-16 2017-11-06 Device and method for controlling the throughflow of blow-molding fluid during the blow molding of containers

Country Status (9)

Country Link
US (1) US11338495B2 (de)
EP (1) EP3541599B1 (de)
JP (1) JP6968185B2 (de)
CN (1) CN110234493B (de)
DE (1) DE102016013635B4 (de)
ES (1) ES2821428T3 (de)
HU (1) HUE051685T2 (de)
PL (1) PL3541599T3 (de)
WO (1) WO2018091006A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019131188A1 (de) 2019-11-19 2021-05-20 Krones Aktiengesellschaft Vorrichtung zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen mit Proportionalventil
EP4302963A1 (de) 2022-07-04 2024-01-10 Eugen Seitz AG Drosseleinheit

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843053A1 (de) 1998-09-19 2000-03-23 Krupp Corpoplast Masch Verfahren und Vorrichtung zur Steuerung eines Blasvorganges
DE10240252A1 (de) 2002-08-31 2004-03-11 Sig Technology Ltd. Verfahren und Vorrichtung zur pneumatischen Steuerung
DE202004018237U1 (de) 2004-11-25 2005-02-24 Festo Ag & Co. Ventilanordnung
US20060097417A1 (en) * 2002-12-23 2006-05-11 Gerard Emmer Method and installation for the production of a plastic container
US20060197263A1 (en) * 2005-03-03 2006-09-07 Graham Packaging Company, L.P. Blow air control system
US20060212161A1 (en) * 2005-03-15 2006-09-21 Bhat Ajit K Systems, devices, and methods for automation control
DE102006061301A1 (de) 2006-12-22 2008-06-26 Krones Ag Verfahren zur Herstellung von Behältern
US20090171476A1 (en) * 2006-06-07 2009-07-02 Emerald Information Systems Ltd Control System for Production Machine
DE102008013419A1 (de) 2008-03-06 2009-09-10 Khs Corpoplast Gmbh & Co. Kg Verfahren und Vorrichtung zur Blasformung von Behältern
US20100201013A1 (en) * 2006-12-05 2010-08-12 Sidel Participations Method for producing a vessel from a preform, with feedback depending on the development point of the preform
EP2097242B1 (de) 2006-12-05 2011-02-23 Sidel Participations Verfahren und vorrichtung zur herstellung von gefässen mit vom startpunkt der vorblasung abhängiger rückmeldung
EP2094467B1 (de) 2006-12-05 2011-08-10 Sidel Participations Verfahren und vorrichtung zur herstellung eines gefässes aus einer vorform mit vom endpunkt der ausweitung der vorform abhängiger rückmeldung
US20130161877A1 (en) * 2011-12-22 2013-06-27 Amcor Limited Apparatus and method for controlling temperature gradient through wall thickness of container
US20140097367A1 (en) * 2012-10-05 2014-04-10 Schneider Electric Buildings, Llc Advanced Valve Actuator With Remote Location Flow Reset
US20150013387A1 (en) * 2012-07-14 2015-01-15 Heye International Gmbh Method and Apparatus for Controlling the Blowing Air and Cooling Air of an I.S. Glassware Forming Machine
US20150042021A1 (en) * 2012-04-26 2015-02-12 Norgren Ag Stretch blow molding system
US20160023396A1 (en) * 2014-07-25 2016-01-28 Khs Corpoplast Gmbh Volume controlled blowing-air feed
US20160114519A1 (en) * 2014-10-28 2016-04-28 Krones Ag Method and device for forming plastic preforms with cross-section change of a volume flow
US20160136868A1 (en) * 2014-11-18 2016-05-19 Krones Ag Method for starting up a blow moulding machine, and system including a blow moulding machine
US20160245423A1 (en) * 2013-10-30 2016-08-25 Krones Ag Container treatment plant and method for displacing a valve or a diverting unit of a container treatment plant
US20190061223A1 (en) * 2016-02-12 2019-02-28 Discma Ag Method for forming and filling a container by monitoring the pressure of liquid injected in the container

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR610618A (fr) 1926-02-04 1926-09-09 Diamond Coal Cutter Company Lt Perfectionnements aux appareils destinés à éviter la surcharge dans les appareils électriques
DE102009040803A1 (de) * 2009-08-25 2011-04-14 Khs Corpoplast Gmbh & Co. Kg Verfahren und Vorrichtung zur Blasformung von Behältern

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843053A1 (de) 1998-09-19 2000-03-23 Krupp Corpoplast Masch Verfahren und Vorrichtung zur Steuerung eines Blasvorganges
DE10240252A1 (de) 2002-08-31 2004-03-11 Sig Technology Ltd. Verfahren und Vorrichtung zur pneumatischen Steuerung
US20060097417A1 (en) * 2002-12-23 2006-05-11 Gerard Emmer Method and installation for the production of a plastic container
DE202004018237U1 (de) 2004-11-25 2005-02-24 Festo Ag & Co. Ventilanordnung
US20060197263A1 (en) * 2005-03-03 2006-09-07 Graham Packaging Company, L.P. Blow air control system
US20060212161A1 (en) * 2005-03-15 2006-09-21 Bhat Ajit K Systems, devices, and methods for automation control
US20090171476A1 (en) * 2006-06-07 2009-07-02 Emerald Information Systems Ltd Control System for Production Machine
EP2097242B1 (de) 2006-12-05 2011-02-23 Sidel Participations Verfahren und vorrichtung zur herstellung von gefässen mit vom startpunkt der vorblasung abhängiger rückmeldung
US20100201013A1 (en) * 2006-12-05 2010-08-12 Sidel Participations Method for producing a vessel from a preform, with feedback depending on the development point of the preform
EP2094467B1 (de) 2006-12-05 2011-08-10 Sidel Participations Verfahren und vorrichtung zur herstellung eines gefässes aus einer vorform mit vom endpunkt der ausweitung der vorform abhängiger rückmeldung
EP2101984B1 (de) 2006-12-05 2014-02-12 Sidel Participations Herstellungsverfahren eines behälters ausgehend von einem vorformling, mit rückführung in abhängigkeit der ausweitung des vorfomlings
DE102006061301A1 (de) 2006-12-22 2008-06-26 Krones Ag Verfahren zur Herstellung von Behältern
DE102008013419A1 (de) 2008-03-06 2009-09-10 Khs Corpoplast Gmbh & Co. Kg Verfahren und Vorrichtung zur Blasformung von Behältern
US20130161877A1 (en) * 2011-12-22 2013-06-27 Amcor Limited Apparatus and method for controlling temperature gradient through wall thickness of container
US20150042021A1 (en) * 2012-04-26 2015-02-12 Norgren Ag Stretch blow molding system
US20150013387A1 (en) * 2012-07-14 2015-01-15 Heye International Gmbh Method and Apparatus for Controlling the Blowing Air and Cooling Air of an I.S. Glassware Forming Machine
US20140097367A1 (en) * 2012-10-05 2014-04-10 Schneider Electric Buildings, Llc Advanced Valve Actuator With Remote Location Flow Reset
US20160245423A1 (en) * 2013-10-30 2016-08-25 Krones Ag Container treatment plant and method for displacing a valve or a diverting unit of a container treatment plant
US20160023396A1 (en) * 2014-07-25 2016-01-28 Khs Corpoplast Gmbh Volume controlled blowing-air feed
US20160114519A1 (en) * 2014-10-28 2016-04-28 Krones Ag Method and device for forming plastic preforms with cross-section change of a volume flow
EP3015248A1 (de) 2014-10-28 2016-05-04 Krones AG Verfahren und vorrichtung zum umformen von kunststoffvorformlingen mit querschnittsveränderung eines volumenstroms
US20160136868A1 (en) * 2014-11-18 2016-05-19 Krones Ag Method for starting up a blow moulding machine, and system including a blow moulding machine
US20190061223A1 (en) * 2016-02-12 2019-02-28 Discma Ag Method for forming and filling a container by monitoring the pressure of liquid injected in the container

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
International Search Report corresponding to PCT Application No. PCT/DE2017/000366, dated Feb. 7, 2018 (German and English language document) (7 pages).

Also Published As

Publication number Publication date
CN110234493A (zh) 2019-09-13
EP3541599B1 (de) 2020-06-24
EP3541599A1 (de) 2019-09-25
PL3541599T3 (pl) 2020-12-14
ES2821428T3 (es) 2021-04-26
US20190351603A1 (en) 2019-11-21
CN110234493B (zh) 2021-07-13
DE102016013635B4 (de) 2021-08-05
HUE051685T2 (hu) 2021-03-29
JP6968185B2 (ja) 2021-11-17
DE102016013635A1 (de) 2018-05-17
WO2018091006A1 (de) 2018-05-24
JP2019534194A (ja) 2019-11-28

Similar Documents

Publication Publication Date Title
CN105415648B (zh) 体积可控的吹塑空气输送
US11338495B2 (en) Device and method for controlling the throughflow of blow-molding fluid during the blow molding of containers
CN101547784B (zh) 通过根据预吹开始点反馈调节方式制造容器的方法
CN103079796B (zh) 利用根据检测压力最小值进行反馈由粗坯制造容器的方法
CN101547782B (zh) 按坯件扩展终止点反馈调节方式由坯件制造容器的方法
WO1994022776A1 (en) Control of plungers in glassware forming machines
JP2013503051A (ja) 容器をブロー成形するための方法および装置
CN101868341A (zh) 塑料容器吹塑机及其控制方法
CN106573407B (zh) 用于控制用于吹制塑性材料制的容器的方法的控制方法
MX2009005955A (es) Procedimiento de fabricacion de un recipiente a partir de un pieza en bruto, con retroaccion en funcion del punto de desarrollo de la pieza en bruto.
CN105711063A (zh) 用于变形塑料型坯的方法
JP2019534194A5 (de)
CN101681178B (zh) 操作温度管理装置的方法
US11906985B2 (en) Valve assembly and method for regulating the pressure of a fluid
CN109890591A (zh) 具有调节系统的用于在注射成型工艺中生产部件的设备
JP3344595B2 (ja) 二軸延伸ブロー成形装置
CN108527759B (zh) 全自动泡沫成型机中的压力精确控制系统
US20220212392A1 (en) Method for regulating the cyclic production of containers by stretch-blowing
CN116985383A (zh) 吹塑设备的吹塑阀设备
CN112873808B (zh) 一种塑料管胚的壁厚控制方法及系统
JPH1076568A (ja) ブロー成形方法
CN109664486B (zh) 配有带比例电磁阀的冲击系统的模制单元
CN213227487U (zh) 用于拉伸和/或吹塑机的线性驱动器
CN116045069A (zh) 智能阀门定位器及控制方法
JP2553769Y2 (ja) 製びん機のパリソン成形装置におけるプランジャ制御機構

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STPP Information on status: patent application and granting procedure in general

Free format text: APPLICATION DISPATCHED FROM PREEXAM, NOT YET DOCKETED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT RECEIVED

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED

STCF Information on status: patent grant

Free format text: PATENTED CASE